import { validatenull } from '../util/validate';

function pluralize(time, label) {
    if (time === 1) {
        return time + label;
    }
    return `${time + label}s`;
}
// 手机号格式化

export function detailPhone(value) {
    let result = '';
    const len = value.length;
    for (let i = 0; i < len; i++) {
        result += value.substr(i, 1);
        if (i === 2) result += ' ';
        if (i === 7) result += ' ';
    }
    return result;
}
/**
 * 日期格式化
 */
export function dateFormat(date) {
    let format = 'yyyy-MM-dd';
    if (date != 'Invalid Date') {
        if (!(date instanceof Date)) {
            date = new Date(date);
        }
        const o = {
            'M+': date.getMonth() + 1, // month
            'd+': date.getDate(), // day
            'h+': date.getHours(), // hour
            'm+': date.getMinutes(), // minute
            's+': date.getSeconds(), // second
            'q+': Math.floor((date.getMonth() + 3) / 3), // quarter
            S: date.getMilliseconds(), // millisecond
        };
        if (/(y+)/.test(format)) {
            format = format.replace(RegExp.$1,
                (`${date.getFullYear()}`).substr(4 - RegExp.$1.length));
        }
        for (const k in o) {
            if (new RegExp(`(${k})`).test(format)) {
                format = format.replace(RegExp.$1,
                    RegExp.$1.length == 1 ? o[k] :
                    (`00${o[k]}`).substr((`${o[k]}`).length));
            }
        }
        return format;
    }
    return '';
}
export function timeAgo(time) {
    const between = Date.now() / 1000 - Number(time);
    if (between < 3600) {
        return pluralize(~~(between / 60), ' minute');
    } else if (between < 86400) {
        return pluralize(~~(between / 3600), ' hour');
    }
    return pluralize(~~(between / 86400), ' day');
}

export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
        return null;
    }

    if ((`${time}`).length === 10) {
        time = +time * 1000;
    }

    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time === 'object') {
        date = time;
    } else {
        date = new Date(parseInt(time));
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay(),
    };
    const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key];
        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
        if (result.length > 0 && value < 10) {
            value = `0${value}`;
        }
        return value || 0;
    });
    return time_str;
}

export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();

    const diff = (now - d) / 1000;

    if (diff < 30) {
        return '刚刚';
    } else if (diff < 3600) { // less 1 hour
        return `${Math.ceil(diff / 60)}分钟前`;
    } else if (diff < 3600 * 24) {
        return `${Math.ceil(diff / 3600)}小时前`;
    } else if (diff < 3600 * 24 * 2) {
        return '1天前';
    }
    if (option) {
        return parseTime(time, option);
    }
    return `${d.getMonth() + 1}月${d.getDate()}日${d.getHours()}时${d.getMinutes()}分`;
}

/* 数字 格式化 */
export function nFormatter(num, digits) {
    const si = [
        { value: 1E18, symbol: 'E' },
        { value: 1E15, symbol: 'P' },
        { value: 1E12, symbol: 'T' },
        { value: 1E9, symbol: 'G' },
        { value: 1E6, symbol: 'M' },
        { value: 1E3, symbol: 'k' },
    ];
    for (let i = 0; i < si.length; i++) {
        if (num >= si[i].value) {
            return (num / si[i].value + 0.1).toFixed(digits).replace(/\.0+$|(\.[0-9]*[1-9])0+$/, '$1') + si[i].symbol;
        }
    }
    return num.toString();
}

export function html2Text(val) {
    const div = document.createElement('div');
    div.innerHTML = val;
    return div.textContent || div.innerText;
}

export function toThousandslsFilter(num) {
    return (+num || 0).toString().replace(/^-?\d+/g, m => m.replace(/(?=(?!\b)(\d{3})+$)/g, ','));
}